Rick Furr of Blacksburg owns close to 1,000 vintage calculators that range in value from a few dollars to more than $5,000 each. He usually keeps them wrapped in plastic sleeves and packed safely away. He maintains the vcalc.net, The Calculator Reference, website. Check out the links.

 

http://www.vcalc.net/images2/NRV-CurrentArticle-051126c.jpg

 

http://www.vcalc.net/